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Revision 6d297540f75d759489054e8b07932208fc4db2cb authored by Rahul Lakkireddy on 11 June 2021, 06:47:47 UTC, committed by David S. Miller on 11 June 2021, 18:15:00 UTC 
cxgb4: halt chip before flashing PHY firmware image
 
When using firmware-assisted PHY firmware image write to flash,
halt the chip before beginning the flash write operation to allow
the running firmware to store the image persistently. Otherwise,
the running firmware will only store the PHY image in local on-chip
RAM, which will be lost after next reset.

Fixes: 4ee339e1e92a ("cxgb4: add support to flash PHY image")
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent f046bd0
Raw File
test_string.c 
// SPDX-License-Identifier: GPL-2.0-only
#include <linux/module.h>
#include <linux/printk.h>
#include <linux/slab.h>
#include <linux/string.h>

static __init int memset16_selftest(void)
{
	unsigned i, j, k;
	u16 v, *p;

	p = kmalloc(256 * 2 * 2, GFP_KERNEL);
	if (!p)
		return -1;

	for (i = 0; i < 256; i++) {
		for (j = 0; j < 256; j++) {
			memset(p, 0xa1, 256 * 2 * sizeof(v));
			memset16(p + i, 0xb1b2, j);
			for (k = 0; k < 512; k++) {
				v = p[k];
				if (k < i) {
					if (v != 0xa1a1)
						goto fail;
				} else if (k < i + j) {
					if (v != 0xb1b2)
						goto fail;
				} else {
					if (v != 0xa1a1)
						goto fail;
				}
			}
		}
	}

fail:
	kfree(p);
	if (i < 256)
		return (i << 24) | (j << 16) | k | 0x8000;
	return 0;
}

static __init int memset32_selftest(void)
{
	unsigned i, j, k;
	u32 v, *p;

	p = kmalloc(256 * 2 * 4, GFP_KERNEL);
	if (!p)
		return -1;

	for (i = 0; i < 256; i++) {
		for (j = 0; j < 256; j++) {
			memset(p, 0xa1, 256 * 2 * sizeof(v));
			memset32(p + i, 0xb1b2b3b4, j);
			for (k = 0; k < 512; k++) {
				v = p[k];
				if (k < i) {
					if (v != 0xa1a1a1a1)
						goto fail;
				} else if (k < i + j) {
					if (v != 0xb1b2b3b4)
						goto fail;
				} else {
					if (v != 0xa1a1a1a1)
						goto fail;
				}
			}
		}
	}

fail:
	kfree(p);
	if (i < 256)
		return (i << 24) | (j << 16) | k | 0x8000;
	return 0;
}

static __init int memset64_selftest(void)
{
	unsigned i, j, k;
	u64 v, *p;

	p = kmalloc(256 * 2 * 8, GFP_KERNEL);
	if (!p)
		return -1;

	for (i = 0; i < 256; i++) {
		for (j = 0; j < 256; j++) {
			memset(p, 0xa1, 256 * 2 * sizeof(v));
			memset64(p + i, 0xb1b2b3b4b5b6b7b8ULL, j);
			for (k = 0; k < 512; k++) {
				v = p[k];
				if (k < i) {
					if (v != 0xa1a1a1a1a1a1a1a1ULL)
						goto fail;
				} else if (k < i + j) {
					if (v != 0xb1b2b3b4b5b6b7b8ULL)
						goto fail;
				} else {
					if (v != 0xa1a1a1a1a1a1a1a1ULL)
						goto fail;
				}
			}
		}
	}

fail:
	kfree(p);
	if (i < 256)
		return (i << 24) | (j << 16) | k | 0x8000;
	return 0;
}

static __init int strchr_selftest(void)
{
	const char *test_string = "abcdefghijkl";
	const char *empty_string = "";
	char *result;
	int i;

	for (i = 0; i < strlen(test_string) + 1; i++) {
		result = strchr(test_string, test_string[i]);
		if (result - test_string != i)
			return i + 'a';
	}

	result = strchr(empty_string, '\0');
	if (result != empty_string)
		return 0x101;

	result = strchr(empty_string, 'a');
	if (result)
		return 0x102;

	result = strchr(test_string, 'z');
	if (result)
		return 0x103;

	return 0;
}

static __init int strnchr_selftest(void)
{
	const char *test_string = "abcdefghijkl";
	const char *empty_string = "";
	char *result;
	int i, j;

	for (i = 0; i < strlen(test_string) + 1; i++) {
		for (j = 0; j < strlen(test_string) + 2; j++) {
			result = strnchr(test_string, j, test_string[i]);
			if (j <= i) {
				if (!result)
					continue;
				return ((i + 'a') << 8) | j;
			}
			if (result - test_string != i)
				return ((i + 'a') << 8) | j;
		}
	}

	result = strnchr(empty_string, 0, '\0');
	if (result)
		return 0x10001;

	result = strnchr(empty_string, 1, '\0');
	if (result != empty_string)
		return 0x10002;

	result = strnchr(empty_string, 1, 'a');
	if (result)
		return 0x10003;

	result = strnchr(NULL, 0, '\0');
	if (result)
		return 0x10004;

	return 0;
}

static __init int string_selftest_init(void)
{
	int test, subtest;

	test = 1;
	subtest = memset16_selftest();
	if (subtest)
		goto fail;

	test = 2;
	subtest = memset32_selftest();
	if (subtest)
		goto fail;

	test = 3;
	subtest = memset64_selftest();
	if (subtest)
		goto fail;

	test = 4;
	subtest = strchr_selftest();
	if (subtest)
		goto fail;

	test = 5;
	subtest = strnchr_selftest();
	if (subtest)
		goto fail;

	pr_info("String selftests succeeded\n");
	return 0;
fail:
	pr_crit("String selftest failure %d.%08x\n", test, subtest);
	return 0;
}

module_init(string_selftest_init);
MODULE_LICENSE("GPL v2");
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